Re: vmscan logic improvement, feedback wanted

Rik van Riel (
Fri, 6 Mar 1998 12:04:15 +0100 (MET)

On Fri, 6 Mar 1998, David Woodhouse wrote:

> said:
> > so far, I've had one succes story with the patch I posted a few hours
> > ago. It showed a huge performance improvement over systems without my
> > patch.
> I'd second that. However, it's still drastically worse than 2.1.88 was.
> This is a 64Mb dual Pentium machine, and when it starts paging, it still
> just locks up for five or ten seconds at a time, and the load hits about eight.

It's in the free_memory_available() test. It's next to
impossible to get a free 128k area from random swapping,
so kswapd swaps up to 1/3rd of total memory at once :-(

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